AuthorTopic: Boolean operation problem! (Read 15482 times)

Hello!I've got some problem when using the union boolean operation. When I try to unify 2 mesh (a wall section and a sphere) I've got the error code 3# .....A concave face detected!....and I don't want to unify the 2 objects manually beacause it's really long work with the whole project. So can anyone give me some help?

This operation will not work, as you are trying to do a union to a curved surface.

To complete the operation You need a flat surface do the union, then do a bend modifier to that, to get your curve.

I think it pays to pre-think the model before getting too far into it, this model just needed one section to be worked on to get it how you wanted, then you could have duplicated and attached each section.

If you don`t want to re-start, I`d just add half spheres at intervals then do a "Join Solids"

This operation will not work, as you are trying to do a union to a curved surface.

To complete the operation You need a flat surface do the union, then do a bend modifier to that, to get your curve.

I'm not too sure I understand. I've boolean-subtracted spheres, cubic figures, and (lathed) objects with round surfaces from each other before, and I don't always get the error message. In fact, to create a cresent-looking hemisphere, I subtracted a smaller circle from a bigger one, and it worked; amoung the random times it mysteriously does.

The reason I revived this thread is because, as I've consistently ran into in the past, I ran into this error message again when trying to subtract a "screw" object from my Cannon chess piece; this, to create the cannon's main body component with a hole drilled through it. Whether it's B-A or A-B, I still get this "error 3" message.